Wastewaters of small municipalities (≤500 IE) are the least treated point source of phosphorus. Is there a place for limnological solution?

Kód výsledku v IS VaVaI

RIV/00020711:_____/17:00004505 - isvavai.cz

Výsledek na webu

http://www.sefs10.cz/abstracts?session=9and=Apply

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Wastewaters of small municipalities (≤500 IE) are the least treated point source of phosphorus. Is there a place for limnological solution?

Popis výsledku v původním jazyce

After decades of research, investment and legislation effort many water-managers would check-off eutrophication. But regardless of science success phosphorus concentrations remain still too high. During the CZ joining EU (2004) we expected new legislation (WFD and 91/271/EEC) will direct us on trajectory of West, i.e. change apportionment from point to non-point sources. After precise arable land monitoring (2006-2011) we found surprisingly low concentration of P (0,069 mg/L) in agricultural headwaters. Then, several regional P-budget models brought us to inevitable conclusion: communal wastewaters are dominant (60-80 %) sources of P emission. In pursue to sharpen P estimation we step up to total survey of point sources. In the last two years thus we walked through every single village (712 together) in four prior watersheds (totally 2289 km2). Revising waste-water (WW) treatment we searched for pipes discharging WW at any dilution. But TP and DRP analyses (499 samples) revealed perspective weakness: one fifth of P comes from ½ of people living in 90 % of municipalities. Standard solution (WC, sewerage, WWTP) is there too expensive and low effective. Consequently, overwhelming length of streams will suffer from highest P-concentrations for longest time. On the other hand, every village has at least one pond. Most of these hypertrophic waters lie in legal vacuum, without targeted fish stock and even maintenance. They are not an official place of WW treatment. Not forgetting present shift from “remove” to “recycle” we search for a good and useful solution. Would be limnology a part of it?

Název v anglickém jazyce

Wastewaters of small municipalities (≤500 IE) are the least treated point source of phosphorus. Is there a place for limnological solution?

Popis výsledku anglicky

After decades of research, investment and legislation effort many water-managers would check-off eutrophication. But regardless of science success phosphorus concentrations remain still too high. During the CZ joining EU (2004) we expected new legislation (WFD and 91/271/EEC) will direct us on trajectory of West, i.e. change apportionment from point to non-point sources. After precise arable land monitoring (2006-2011) we found surprisingly low concentration of P (0,069 mg/L) in agricultural headwaters. Then, several regional P-budget models brought us to inevitable conclusion: communal wastewaters are dominant (60-80 %) sources of P emission. In pursue to sharpen P estimation we step up to total survey of point sources. In the last two years thus we walked through every single village (712 together) in four prior watersheds (totally 2289 km2). Revising waste-water (WW) treatment we searched for pipes discharging WW at any dilution. But TP and DRP analyses (499 samples) revealed perspective weakness: one fifth of P comes from ½ of people living in 90 % of municipalities. Standard solution (WC, sewerage, WWTP) is there too expensive and low effective. Consequently, overwhelming length of streams will suffer from highest P-concentrations for longest time. On the other hand, every village has at least one pond. Most of these hypertrophic waters lie in legal vacuum, without targeted fish stock and even maintenance. They are not an official place of WW treatment. Not forgetting present shift from “remove” to “recycle” we search for a good and useful solution. Would be limnology a part of it?

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10617 - Marine biology, freshwater biology, limnology

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

10th Symposium for european freshwater Sciences - Abstract book

ISBN

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ISSN

neuveden

e-ISSN

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Počet stran výsledku

1

Strana od-do

i

Název nakladatele

Edukol, s.r.o.

Místo vydání

Olomouc

Místo konání akce

Olomouc, ČR

Datum konání akce

2. 7. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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